sfrhaap



A. K.' scHAAP.'

COMPRESSED GAS AND AIR BURNER.

APPLICATION FILED JUNE t6, 15H5.

Pate'namlg. 22,1916.

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reduction of pressure through the passage 12 and through the holes 3. These gases flow with less pressure because of the obstructions incidental to the tins 10. The result of this structiiu'e is that when in use, as above described, the combustion'is quick and the heat is intense along the axis of the flame, that is about the opening 2 and gas passing through the opening 2 is somewhat preheated by the heating of this tube due to the flames impinged upon it caused by the gases issuing from the holes 3.

ln the event that a more powerful flame is desired, this result is obtained by adding to the structure shown in Figs. 1 and 2, several additional shells, shown in Fig. 5. Here the nozzle 7 rests in and against,with a snug lit, a larger nozzle 14, the inner end of which is reduced at 15 to form va neck which is provided with internal screw threads which engage similar threads on the exterior of the nozzle 'l and exterior screw threads which engage corresponding threads on the outside nozzle 16. The nozzle 16 has suitable unions 1'( through which mixed gas and air may be supplied, and it has external fins 18 which are adapted to radiate heat. The nozzle `141 has suitable perforated fins 19 on each side i of the openings 3 for the reason above given.

When this nozzle is in use, mixed gas and air simultaneously issue from all the openings 3, as well as the opening 2 and the combustion on the interior of the nozzles 9 and with a corresponding high degree of heat developed in a small space. is above set forth, the quality of the flame, whether for heating or reducing, neutral or oxidizing, according to the desire of the operator, is vdetermined by regulating the valves which regulate the flow of air and gas respectively, to the compressor.

In Fig. 7 a slightly modified structure is shown in that the interior fins 19 of the nozzle 14: are slightly changed in shape, their function being identical with what is above described.

ln Figs. 11 and 12 a small burner is shown with a slightly modified structure. Here the spindle 11 is surrounded by a bushing 20 the lower end of which tits snug against this spindle and the upper end of which lits snug in the tubing 5. The upper end of the bushing 20, as Well as the upper end of the tubing 5 is closed by a suitable gasket 21 held by a washer 22, Whichin turn is held 'b a packing ring 23. Gas reaches the. interlor of the bushing 20 through a suitable opening 24 'which registers with the opening inV the elbow 6 and from thence passes through the passage 13 to the passage 12 at the interior of the spindle 11 and also through a passage 235 surrounding the lower end of the bushing 20 and between it and the casing 5 to the perforations 3 at the lower end of the bushing' 2O from which the gas an'd air flow radially toward the center of the opening 2, as above described. The space 25 about the lower end of the bushing 20 is closed at the exposed end by a suitable internal collar 2U, Which is preferably made integral with the tube 5. A

As the tube about the opening 2v may be exposed to very intense heat, it is preferable to make this of some heat resisting metal such as platinum, although this is not essential, the platinum or other heat 'resisting metal being used at the outer end only where the greatest heat is found when the burner is in use.

In view of the foregoing, the operation of my improved burner will be readily understood. If it is to be used with a mixture of air and gas, as above described, this mixture is allowed to How so that a portion passes through the passage 12 in the direction of the axis of the burner and through the y opening 2 where it is ignited and more of` the mixture at reduced pressure yflows through the openings 3 where it is ignited at right angles to the axis of the burner and radially, so that great heat-is generated s which is caused by `combustion taking place in a very limited space and very rapidly, so that great heat is developed in'a small space, which heat may be entirely controlled by controlling the proportions of air and gas flowing to the burner and their and so the flame may be made suitable for heating or reducin or oxidizn or welding, as above describe As the el mixture burns without additional air, the llame issuing from the burner may be applied under wateror elsewhere out of an atmosphere containing oxygen and at a considerable pressure as compared with the pressures available with unmixed hydrogen blow-pipe w ere an excessive pressure will easily extinguish the flame. I f

By a slight change in' structure, that is by closing the passage 13 and extending the passage 12 throughout' the, len h of, the stem 11, and then connecting t is passage with a. source of acetylene gas and oxygen," it is possible to use an acetylene flame -for the core of the burner and intensify the heat thereof by the flames issuingfrom the openings 3, or if desired, a mixture of air and acetylene gas may be passed through this central tube. In any event, the burner may be used in a great number of Ways with a great number of variations, according to the results desired.

While I have shown and described several embodiments of my invention, it is obvious that it is not restricted thereto but is broad enough to cover all structures that come within the scope of the annexed claims.

Having thus described my invention, what I claim is,

1. A single burner provided with means 2. A single burner provided with meansl for projecting gaseous and mixed fuel in the direction of its axis and additional means for projecting ignited gaseous and mixed fuel radially toward the axis.

3. A single burner with means for projecting gaseous and mixed fuel in the direction of its axis and additional means for projecting ignited gaseous and mixed fuel toward the first means alcove mentioned at pressure lower than the pressure of the fuel.

flowing in the direction of the axis.

e. A single burner provided with means 'for proj eeting gaseous and mixed fuel in the direction of itsaxis and additional means for projecting the same kind of ignited fuel radially at al reduced pressure toward this axis.

5. In a burner, a central part with means for projecting mixed fuel in the direction of the axis of the burner and av surrounding nozzle with flame perforations therein adapted t cause the flow of gaseous and mixed fue in the direction of the first means above mentioned of the burner whereby an intensely'hot flame may he formed at and irnmediately about the axis.

6. A burner with a central tulie surrounded by a plurality of nozzles some of said nozzles having radially disposed perforations through which gaseous fuel may issue and flow in the direction of the axis of the burner.

7. A burner provided with a central portien through which gaseous fuel may How' in the'direction of the axis of the burner and a nozzle secured to and surrounding said central portion, said nozzle ,having radially disposed holes and projecting ns adjacent to said holes whereby preheated gaseous fuel may flow at a reduced and even pressure through said holes and toward the axis of the burner.

ALEXANDER K. SOHAAP. 

